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' diameter only nd for convenience " <br /> y ence ignores 4 and 6 lateral sewers, which in most instances <br /> create only insignificant differences in test time. <br /> ' AIR TEST TABLE <br /> Based on Equations from ASTM C 828 <br /> SPECIFICATION TIME(min:sec) REQUIRED FOR PRESSURE DROP FROM 3-1/2 <br /> TO 2-1/2 PSIG <br /> WHEN TESTING ONE PIPE DIAMETER ONLY <br /> ' PIPE DIAMETER, INCHES <br /> LENGTH OF <br /> ' LINE, FEET --4_---- 6----- 8----- 10----12----- 15 _--18-- _21----24 --- <br /> 25 0:04 0:10 0:18 0:28 0:40 1:02 1:20 2:01 2:38 <br /> ' 50 0:09 0:20 0:35 . 0:55 1:19 2:04 2:58 4:03 5:17 <br /> 75 0:13 0.30 0:53 1:23 1:59 3:06 4:27 6:04 7:55 <br /> 100 0:18 0:40 1:10 1:50 2:38 4:08 5:56 8:05 10:34 <br /> ' 125 0:22 0:50 1:28 2:18 3:18 5:09 7:26 9:55 11:20 <br /> 150 0:26 0:59 1:46 2:45 3:58 6:11 8:30 <br /> 175 0:31 1:09 2:03 3:13 4:37 7:05 - - - <br /> ' 200 0:35 1:19 2:21 3:40 5:17 - - - 12:06 <br /> 225 0:40 1:29 2:38 4:08 5:40 - - 10:25 13:36 <br /> ' 250 0:44 1:39 2:56 4:35 = - 8:31 11:35 15:07 <br /> 275 0:48 1:49 3:14 4:43 9:21 12:44 16:38 <br /> 300 0:53 1:59 3:31 - - - 10:12 13:53 18:09 <br /> ' 350 1:02 2:19 3:47 _ - 8:16 11:54 6:12 21:10 <br /> 400 1:10 2:38 6:03 9:27 13:36 18:31 24:12 <br /> 450 1:19 2:50 _ - 6:48 10:38 15:19 20:50 27:13 <br /> 500 1:28 5:14 7:34 11:49 17:01 23:09 30:14 <br /> ' 18. Setting Ductile Iron Fittings. Ductile iron fitt ings shall be set at locations shown in the Plans <br /> or as directed by the Engineer. The installation of fittings shall be made in accordance with <br /> Section 10 of AWWA C-600. Special care shall be taken to properly bell-up the joints and to <br /> ' support the body of the fitting. All fittings shall be restrained using mega-lug mechanical joint <br /> restraints. <br /> 19. Joint Restraint. All cast iron or ductile iron fittings, hydrants, valves, fittings, and other water <br /> line components subject to hydrostatic thrust shall be surely restrained by use of mega-lug <br /> ' mechanical joint restraints. <br /> 20. Concrete Encasement. Wherever in the laying of the sanitary sewer line the pipe is in a <br /> ' shallow trench where insufficient cover conditions exist, or where shown on the Drawings, or as <br /> directed by the Engineer, the pipe shall be completely encased in Class "C' concrete. This <br /> ' SANITARY SEWER LINES: DETAILED SPECIFICATIONS FOR INSTALLATION SS-9 <br /> 10/15/09 <br />